How and where to use guide

VELUX Flat Roof Smoke Ventilation Accessories KFC 220 EU should be used according to the intended application and site requirements. How and where to use: - Prepare surfaces and adjoining assemblies before installation. - Install to manufacturer guidance and relevant site standards. - Check fit, alignment, and finish quality before handover. - Additional context: This product is supplied with a battery backup that allows for at least 72 hours of power to maintain functionality and ventilation in the event of fire or smoke. As for the integrated main control panel and ventilation switches, they make operation easy an...